Malicious PDF — malware analysis report

Static analysis result for SHA-256 9844d0651df1a347…

MALICIOUS

PDF

73.7 KB Created: 2021-03-29 14:35:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f70ed86e8e9b3390beee6910b944ead6 SHA-1: de11d622216f3c7388171717969ccc3100daaebd SHA-256: 9844d0651df1a3475af278ce76757dddb612bbff530bad8683d2cd6b8a99f2f4
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate maliciousness. Although no scripts were explicitly extracted, the PDF structure and embedded URI are sufficient to infer a malicious intent to redirect the user to a potentially harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://golowaki.ru/award?keyword=botany+for+gardeners+third+edition+pdf
    • https://matebafezit.weebly.com/uploads/1/3/4/5/134592398/negiku.pdf
    • https://cdn.sqhk.co/dugelabomaw/e4ijCjj/siwoxekagepam.pdf
    • https://marexuja.weebly.com/uploads/1/3/6/0/136056735/d7edce77229f0.pdf
    • https://wanusasa.weebly.com/uploads/1/3/1/0/131070791/cb28a.pdf
    • https://cdn.sqhk.co/nakunadubux/frFjgfQ/90534851363.pdf
    • http://sfhgfje5df.xyz/okin_lift_chair_power_supply_transformer_sp2-b_kitjzzfq.pdf
    • http://gladkoe-telo.xyz/nusosikigifabekug8ul8e.pdf
    • http://carinsusa.com/song_of_ice_and_fire_book_release_dates9k26l.pdf
    • https://cdn.sqhk.co/vanatuwo/hidYjgy/83027524008.pdf
    • http://themarkuzmusic.com/51320336064icnjf.pdf
    • https://cdn.sqhk.co/bokupajokim/2jaieqB/harry_potter_hogwarts_mystery_gameplay_year_7.pdf
    • https://samojosaletope.weebly.com/uploads/1/3/4/0/134017273/46fa9bac0d48795.pdf
    • https://cdn.sqhk.co/vedimofaw/jahhSch/guzogatipegeme.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/kakekojezutok/sulugugagevawo.pdf
    • https://uploads.strikinglycdn.com/files/e74bea28-8d55-4a3c-8661-f5e6ddce5921/lexedobefilemuvojinetuwu.pdf
    • https://af18ad75-7652-4b25-b9e0-8da5fded0af1.filesusr.com/ugd/529385_55d72655eb9a4b41b4248adf5025edc7.pdf?index=true
    • https://s3.amazonaws.com/gifojuxaxeva/31633061532.pdf
    • https://c84d532c-3b33-47d6-96aa-4134a1164eb1.filesusr.com/ugd/6d45f6_71581dcb74de4cfc9182a01e17468f5e.pdf?index=true
    • https://uploads.strikinglycdn.com/files/2b338a6f-955d-4821-a12c-6d65a7acdd56/7618206446.pdf
    • https://s3.amazonaws.com/kotidox/14579940783.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3da.bin
3368ff705c9d51b86581c189cf0db373fc5f3cd0b4c984e10b0b49bdb2efa7a9
pdf-font-stream PDF embedded font (sfnt) at offset 0xE3DA 5420 bytes
font_01_sfnt_off0000f654.bin
b41b9cf6acac3a7e5d641129a275f0579c7f167b241d0069324093bd8b67ea5f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF654 10232 bytes